Mimestream is a native macOS email client built around the Gmail API specifically, not generic IMAP. It talks to Gmail's own labels and threading model directly instead of emulating them.
It owns the email client slot narrowly: Gmail accounts only, macOS only. A team on Outlook, or anyone needing a Windows or web client, is out of luck.
Built for one person on a Mac who lives in Gmail and wants something faster than the browser tab or Mail.app. There's no team plan and no story for a company standardizing on it.
No AI features, despite what you might expect from an email app in 2026 - it's a fast native shell over Gmail and nothing more. $4.99/month or $49.99/year, with a genuine 14-day free trial that doesn't require a credit card.
macOS email client combining power with Gmail's advanced features.
